package servlet;

import com.fasterxml.jackson.databind.ObjectMapper;
import model.Blog;
import model.BlogDao;
import model.User;
import model.UserDao;

import javax.servlet.ServletException;
import javax.servlet.annotation.WebServlet;
import javax.servlet.http.HttpServlet;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import java.io.IOException;
import java.util.HashSet;

@WebServlet("/getAuthorInfo")
public class AuthorInfoServlet extends HttpServlet {
    private ObjectMapper objectMapper=new ObjectMapper();

    @Override
    protected void doGet(HttpServletRequest req, HttpServletResponse resp) throws ServletException, IOException {
        String blogId=req.getParameter("blogId");
        if(blogId==null){
            resp.setContentType("text/html; charset=utf8");
            resp.getWriter().write("请求中缺少 blogId!");
            return;
        }

        BlogDao blogDao = new BlogDao();
        Blog blog = blogDao.getBlog(Integer.parseInt(blogId));
        if (blog == null) {
            resp.setContentType("text/html; charset=utf8");
            resp.getWriter().write("blogId 没有找到!");
            return;
        }

        UserDao userDao = new UserDao();
        User user = userDao.getUserById(blog.getUserId());
        if (user == null) {
            resp.setContentType("text/html; charset=utf8");
            resp.getWriter().write("userId 没有找到!");
            return;
        }

        user.setPassword("");
        String respJson=objectMapper.writeValueAsString(user);
        resp.setContentType("application/json; charset=utf8");
        resp.getWriter().write(respJson);
    }
}
